GPA Calculator
Add your courses, pick a letter grade and credit hours for each, and instantly see your weighted GPA, total credits, and an optional new cumulative GPA on the standard US 4.0 scale. No sign-up — your grades never leave your browser.
What is the GPA Calculator?
The GPA Calculator is a free, instant tool that turns your letter grades and credit hours into a single number: your grade point average on the standard US 4.0 scale. Add one row per course, choose a letter grade (A through F, with plus and minus), and type how many credit hours the course is worth. The tool weighs each grade by its credits and shows your GPA, your total credit hours, and — if you want it — a projected new cumulative GPA. Everything is computed in your browser, with no account and no waiting.
How to use it
- Use Add course to create a row. Optionally name it (for example, "Calculus I").
- Pick the letter grade from the dropdown.
- Enter the credit hours (commonly 1 to 5 per course).
- Repeat for every class; use the × button to remove a row.
- Your weighted GPA and total credits update instantly — there is no Calculate button.
- To project your overall standing, turn on cumulative mode and enter your prior GPA and the total credits it covers.
The 4.0 grade-point mapping
On the unweighted 4.0 scale, each letter grade maps to a fixed number of grade points:
| Letter grade | Grade points |
|---|---|
| A+ / A | 4.0 |
| A- | 3.7 |
| B+ | 3.3 |
| B | 3.0 |
| B- | 2.7 |
| C+ | 2.3 |
| C | 2.0 |
| C- | 1.7 |
| D+ | 1.3 |
| D | 1.0 |
| D- | 0.7 |
| F | 0.0 |
The weighted-GPA method
Your GPA is credit-weighted, which means courses worth more credits pull the average more strongly. The method has three steps:
- For each course, multiply its grade points by its credit hours to get quality points.
- Add up the quality points for every course, and separately add up all the credit hours.
- Divide total quality points by total credit hours. That ratio is your GPA.
GPA = (sum of grade points x credits) / (sum of credits)
Worked example
Suppose you took four classes this term:
- Biology — grade B+ (3.3), 4 credits → quality points = 13.2
- English — grade A (4.0), 3 credits → quality points = 12.0
- Statistics — grade A- (3.7), 3 credits → quality points = 11.1
- History — grade C+ (2.3), 2 credits → quality points = 4.6
Total quality points = 13.2 + 12.0 + 11.1 + 4.6 = 40.9. Total credits = 4 + 3 + 3 + 2 = 12. Your term GPA = 40.9 / 12 = 3.41.
Now add a prior record: a cumulative GPA of 3.60 across 45 credits. Prior quality points = 3.60 x 45 = 162.0. Combine: (162.0 + 40.9) / (45 + 12) = 202.9 / 57 = 3.56 — your new cumulative GPA.
Common use cases
- Checking your semester GPA before final grades are posted to your transcript.
- Projecting how a strong or weak term will move your overall cumulative GPA.
- Figuring out what grades you need to reach a target average for a scholarship or honor roll.
- Comparing the impact of a high-credit course versus a low-credit elective.
- Double-checking the GPA your school's portal reports.
Why use this one
Many GPA tools fix the number of course boxes, hide the grade-point table, or ask you to register first. This one lets you add and remove course rows freely, shows the full 4.0 mapping on the page, and includes an optional cumulative-projection mode — all with instant recalculation. It is private by design: your grades are processed in the browser and never uploaded, stored, or shared. No account, no email.
Results are estimates for general informational purposes only. Grading scales, plus/minus rules, and weighted (honors/AP) points vary by school — confirm your official GPA with your institution.
Frequently asked questions
How is weighted GPA calculated on the 4.0 scale?
Each letter grade is converted to grade points (A=4.0, A-=3.7, B+=3.3, and so on down to F=0.0). Each course's grade points are multiplied by its credit hours to get quality points. Your GPA is the total quality points divided by the total credit hours, so courses worth more credits weigh more heavily.
What is the difference between term GPA and cumulative GPA?
Term GPA covers only the courses you enter for one semester or quarter. Cumulative GPA blends your entire academic record. Turn on the cumulative option, enter your prior GPA and the total credits it covers, and the calculator combines them with this term's quality points to project your new overall GPA.
Are credit hours and grade weights the same thing?
Credit hours are how much each course counts toward your GPA. A 4-credit class affects your average twice as much as a 2-credit class with the same grade. This tool uses the standard unweighted 4.0 scale, where credit hours do the weighting and an A in any class is 4.0.
Does an A+ count as more than 4.0?
Not here. Most US schools cap the unweighted scale at 4.0, so this calculator treats A+ and A both as 4.0. If your school awards 4.3 for an A+ or uses weighted honors/AP points, your official GPA may differ slightly.
Are my grades saved or sent anywhere?
No. The entire calculation runs in your browser. The course names, grades, and credits you enter are never uploaded to a server, stored, or shared — close the tab and they are gone.